Properties of the Number 25871

Twenty-Five Thousand Eight Hundred Seventy-One

Basics

Value: 25870 → 25871 → 25872

Parity: odd

Prime: No

Previous Prime: 25867

Next Prime: 25873

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 41 × 631

Divisors: 1, 41, 631, 25871

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110010100001111

Octal: 62417

Duodecimal: 12B7B

Hexadecimal: 650f

Square: 669308641

Square Root: 160.844645543456

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(n) = (2·n - 1)*(3·n² - 3·n + 2)/2. A63491

Expansion of e.g.f. -∑_k>=1 log(1 - (exp(x) - 1)^k) / k. A330351

Odd numbers n for which 17 is the smallest i (>= 1) with Jacobi symbol J(i,n) getting either a value 0 or -1. A112077

a(n) = 784·n - 1. A158399

Starting at n, a(n) is the number of times we move from a positive spot to a spot we have already visited according to the following rules. On the k-th step (k=1,2,3,...) move a distance of k in the direction of zero. If the number landed on has been landed on before, move a distance of k away. A324684

Number of 5 X n 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically. A207125

Expansion of 1/((1-x⁴)*(1-x⁷)*(1-x¹²)). A25871